Squashed 'themes/xmin/' changes from 982dfb3..aa6eb5a

aa6eb5a Make post template microformats-compatible
217445a Support XFN
6365d4b Improve semanticity
ccbf84f Remove useless main tag
ee3e939 Show tags as article metadata
6394af8 Add support for alternative output formats (e.g. RSS)
b85fdab Remove non-semantic hr tags from layout
311e7f3 Make 404 page less shouty
773e2d4 Convert to block-based templates
791259e Alphabetically sort CSS properties
f61a5f2 Use ISO8601 date format
6d06143 Remove custom fonts

git-subtree-dir: themes/xmin
git-subtree-split: aa6eb5a51f3bdbc4e7c621d2a36701ef57ce0143

Squashed 'themes/xmin/' content from commit 982dfb3

git-subtree-dir: themes/xmin
git-subtree-split: 982dfb320e8ac58a78203be76c5b06beae25d4f9